Particle capture system

Abstract

The invention provides a particle trapping system, and relates to the technical field of dust removal equipment, the particle trapping system comprises an inlet flue main pipe, an outlet flue main pipe, at least two particle trapping devices and an ash conveying assembly, the particle trapping devices are arranged in parallel, the inlet of each particle trapping device is communicated with the inlet flue main pipe through an inlet flue branch pipe, and the outlet of each particle trapping device is communicated with the ash conveying assembly through an outlet flue branch pipe. An outlet of the particle trapping device is communicated with an outlet flue header pipe through an outlet flue branch pipe; the ash conveying assembly comprises a plurality of ash conveying pipes correspondingly communicated with the ash discharging ports of the particle trapping devices, and a cooling device and an ash bin which are sequentially arranged on the ash conveying pipes. By adopting the distributed design of parallel operation of a plurality of particle trapping devices, the technical problem that the traditional single large-scale separation equipment occupies a large area is fundamentally solved, and the arrangement forms such as a circular array or a linear array can be flexibly selected according to the actual space condition on site; and the adaptability and the arrangement flexibility of the equipment in a complex and narrow environment of a steel mill are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, and in particular to a particle collection system. Background Technology

[0002] Converter steelmaking is the mainstream process in modern steel production, accounting for approximately 90% of total steel output. During converter blowing, a large amount of high-temperature flue gas is generated, characterized by high temperature, high dust content, high flow rate, and high carbon monoxide (CO) content. Simultaneously, converter flue gas carries a significant amount of sensible heat, making it a valuable secondary energy source for recovery. In current technological practices, to achieve safe and stable comprehensive waste heat recovery from converter flue gas, it is essential to first effectively capture and separate the high-temperature molten dust (spark) and particulate matter from the flue gas to prevent them from entering the subsequent waste heat boiler system, thereby ensuring the safe and stable operation of the boiler and improving heat exchange efficiency. Existing technologies typically employ equipment such as cyclone separators and inclined plate settling devices to achieve this separation. However, existing particle capture and separation equipment shares a significant common drawback: excessive floor space. Typically, the volume and space requirements of these separation devices far exceed those of the connected vaporization cooling flue (i.e., the pre-flue). In the existing compact process layout of steel plants, finding suitable installation locations for such large-scale equipment becomes extremely difficult, often requiring large-scale modifications to the existing plant structure. This significantly limits its application flexibility in technological upgrades or new construction projects, and also increases the difficulty and cost of engineering implementation. Therefore, how to improve the layout flexibility of particle collection equipment while ensuring particle collection efficiency has become an urgent technical problem to be solved. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a particle capture system that improves the deployment flexibility while ensuring particle capture efficiency.

[0004] The above-mentioned objective of this invention can be achieved by the following technical solution: This invention provides a particle capture system, comprising:

[0005] The inlet flue main is used to input the flue gas to be captured;

[0006] The outlet flue main pipe is used to output the purified flue gas.

[0007] At least two particulate collection devices are provided, each of which is connected in parallel. The inlet of each particulate collection device is connected to the main inlet flue via an inlet flue branch pipe, and the outlet of each particulate collection device is connected to the main outlet flue via an outlet flue branch pipe.

[0008] The ash conveying assembly includes multiple ash conveying pipes corresponding to and connected to the ash discharge ports of each of the particle collection devices, as well as a cooling device and an ash hopper sequentially arranged on the ash conveying pipes.

[0009] In a preferred embodiment of the present invention, a plurality of the particle collection devices are arranged in a linear array.

[0010] In a preferred embodiment of the present invention, at least two inlet flue branch pipes are provided, each inlet flue branch pipe is connected in parallel to the inlet flue main pipe, and each inlet flue branch pipe is connected in series to at least two particle collection devices; and / or, at least two outlet flue branch pipes are provided, each outlet flue branch pipe is connected in parallel to the outlet flue main pipe, and each outlet flue branch pipe is connected in series to at least two particle collection devices.

[0011] In a preferred embodiment of the present invention, at least three particle collection devices are provided, and the plurality of particle collection devices are arranged in a ring array.

[0012] In a preferred embodiment of the present invention, the inlet flue main pipe is provided with a distribution port, the distribution port being connected to each of the inlet flue branch pipes; and / or, the outlet flue branch pipes are provided with multiple branches, each of the particle collection devices being connected to each other through an outlet flue branch pipe to form a ring, and one of the outlet flue branch pipes being connected to the outlet flue main pipe.

[0013] In a preferred embodiment of the present invention, the particle collection device includes:

[0014] The inner cylinder has its upper part connected to the inlet flue branch pipe and its bottom part connected to the ash conveying pipe. The inner cylinder has a multi-layer hole group on its side wall for the passage of flue gas.

[0015] An outer cylinder is sleeved outside the inner cylinder. The bottom of the outer cylinder is connected to the outlet flue branch pipe. A flow channel is formed between the outer cylinder and the inner cylinder, and the flow channel is connected to the multi-layer hole group.

[0016] A particle trapping structure includes multiple inclined plates disposed in the inner cylinder, the inclined plates being inclined downwards along the outer side of the inner cylinder to the middle of the inner cylinder.

[0017] In a preferred embodiment of the present invention, the bottom of the inner cylinder is tapered inward and connected to the ash conveying pipe; the upper part of the outer cylinder is tapered inward and connected to the outer wall of the inlet flue branch pipe; and the lower part of the outer cylinder is tapered inward and connected to the outlet flue branch pipe.

[0018] In a preferred embodiment of the present invention, the flow cross-sectional area of ​​the inlet flue branch pipe is the same as the flow cross-sectional area of ​​the inner cylinder; and / or, the flow cross-sectional area of ​​the inlet flue branch pipe is the same as the flow cross-sectional area of ​​the outlet flue branch pipe.

[0019] In a preferred embodiment of the present invention, the total opening area of ​​the multi-layer hole group is not less than the flow cross-sectional area of ​​the inlet flue branch pipe.

[0020] In a preferred embodiment of the present invention, the flow cross-sectional area of ​​the inlet flue main is the same as that of the outlet flue main; and / or, the total flow cross-sectional area of ​​each of the inlet flue branch pipes is not less than the flow cross-sectional area of ​​the inlet flue main.

[0021] In a preferred embodiment of the present invention, the flow cross-sectional area of ​​the outer cylinder is not less than twice the flow cross-sectional area of ​​the inner cylinder.

[0022] In a preferred embodiment of the present invention, the particle collection system further includes a dust conveying structure for connecting the ash silo and the converter.

[0023] In a preferred embodiment of the present invention, the cooling device is a cooling ash machine, the cooling medium inlet of the cooling ash machine is connected to a cooling water inlet pipe, and the cooling medium outlet of the cooling ash machine is connected to a cooling water outlet pipe.

[0024] In a preferred embodiment of the present invention, the particle capture system further includes a waste heat boiler, and the outlet flue main and / or the cooling water outlet pipe are connected to the waste heat boiler.

[0025] In a preferred embodiment of the present invention, the particle collection system further includes a primary dust removal device, which is connected to the air outlet of the waste heat boiler.

[0026] The technical solution of the present invention has the following significant beneficial effects:

[0027] The particle capture system described in this invention fundamentally solves the technical problem of the large footprint of traditional single large-scale separation equipment by employing a distributed design with multiple particle capture devices operating in parallel. The particle capture system of this invention can flexibly select from circular or linear array arrangements according to actual site conditions, greatly improving the adaptability and layout flexibility of the equipment in the complex and confined environment of steel plants, and reducing the difficulty and cost of engineering implementation. Furthermore, the parallel arrangement of multiple particle capture devices, while ensuring the total air volume processed, reduces the load and flow rate of individual particle capture devices, reduces wear, and enhances the stability of system operation, providing a reliable guarantee for the safe, efficient, and long-term operation of subsequent waste heat boilers and other equipment.

[0028] The particle capture system described in this invention integrates the functions of particle collection, cooling, storage, and recycling, forming a complete resource recovery chain. It also improves layout flexibility while ensuring particle capture efficiency. High-temperature particles captured by the particle capture device are safely cooled via an ash conveyor pipe into a cooling device, avoiding potential safety hazards associated with traditional treatment methods. The cooled particles are ultimately stored in an ash silo and centrally reused (e.g., returned to a converter for smelting), fully recovering valuable resources such as the abundant iron, thus achieving a balance between environmental and economic benefits. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0031] Figure 1 This is a schematic diagram of one embodiment of the particle capture system described in this invention;

[0032] Figure 2 This is a schematic diagram of a structure in which two particle collection devices described in this invention are connected in parallel.

[0033] Figure 3 This is a schematic diagram of a structure in which multiple particle collection devices described in this invention are connected in parallel.

[0034] Figure 4 This is a schematic diagram of a linear array structure of the particle collection device described in this invention;

[0035] Figure 5 This is a schematic diagram of a circular array structure of the particle collection device described in this invention.

[0036] The reference numerals in the above figures are as follows:

[0037] 10. Converter;

[0038] 100. Main inlet flue; 110. Branch inlet flue;

[0039] 200. Main outlet flue pipe; 210. Branch outlet flue pipe;

[0040] 300. Particle collection device; 310. Inner cylinder; 320. Outer cylinder; 330. Particle collection structure;

[0041] 400. Ash conveying assembly; 410. Ash conveying pipe; 420. Cooling device; 421. Cooling water inlet pipe; 422. Cooling water outlet pipe; 430. Ash silo;

[0042] 500. Dust conveying structure;

[0043] 600. Waste heat boiler;

[0044] 700. Primary dust removal device. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] Please refer to the following: Figures 1 to 5 The embodiment shown in the present invention provides a particulate collection system, which includes an inlet flue main 100, an outlet flue main 200, at least two particulate collection devices 300, and an ash conveying assembly 400. The inlet flue main 100 is used to input the flue gas to be collected; the outlet flue main 200 is used to output the purified flue gas; the particulate collection devices 300 are arranged in parallel, the inlet of the particulate collection device 300 is connected to the inlet flue main 100 through an inlet flue branch pipe 110, and the outlet of the particulate collection device 300 is connected to the outlet flue main 200 through an outlet flue branch pipe 210; the ash conveying assembly 400 includes multiple ash conveying pipes 410 corresponding to the ash discharge ports of each particulate collection device 300, and a cooling device 420 and an ash hopper 430 arranged sequentially on the ash conveying pipes 410.

[0047] Overall, this particle capture system fundamentally solves the technical problem of the large footprint of traditional single large-scale separation equipment by adopting a distributed design with 300 particle capture devices operating in parallel. The particle capture system of this invention can flexibly choose from circular or linear array arrangements according to the actual space conditions on site, greatly improving the adaptability and layout flexibility of the equipment in the complex and confined environment of steel plants, and reducing the difficulty and cost of engineering implementation.

[0048] Furthermore, the parallel arrangement of multiple particle collection devices 300 ensures the total processing air volume while reducing the load and flow rate of a single particle collection device 300, reducing wear and enhancing the stability of system operation, thus providing a reliable guarantee for the safe, efficient, and long-term operation of subsequent equipment such as the waste heat boiler 600.

[0049] This invention's particulate matter capture system integrates the functions of particulate matter collection, cooling, storage, and recycling, forming a complete resource recovery chain. While ensuring efficient particulate matter capture, it also improves layout flexibility. High-temperature particulate matter captured by the particulate matter capture device 300 enters the cooling device 420 via the ash conveying pipe 410 for safe cooling, avoiding potential safety hazards associated with traditional treatment methods. The cooled particulate matter is ultimately stored in the ash silo 430 and centrally reused (e.g., returned to the converter 10 for smelting), fully recovering valuable resources such as the rich iron element, achieving a balance between environmental and economic benefits.

[0050] In one feasible embodiment of the present invention, multiple particle collection devices 300 are arranged in a linear array. By arranging multiple particle collection devices 300 in a linear array, it is possible to better adapt to the complex spatial environment and layout constraints on site, especially suitable for industrial scenarios with narrow spaces and dense pipelines, such as steel plants, significantly improving space utilization and layout flexibility.

[0051] Furthermore, the use of a linear array arrangement helps to balance the flue gas distribution of each particulate capture device 300, improve the overall system's operational stability and particulate capture efficiency, and provide a reliable technical guarantee for achieving safe, efficient, and long-term operation.

[0052] Designers can adjust the specific number and arrangement of the particle collection devices 300 according to their needs, and no specific restrictions are imposed here.

[0053] In one feasible embodiment, two particle trapping devices 300 are provided, and the two particle trapping devices 300 are arranged in a row with a gap between them.

[0054] In another feasible embodiment, four particle trapping devices 300 are provided, and the four particle trapping devices 300 are arranged in a linear array to form two rows and two columns.

[0055] Of course, in other feasible embodiments, the particle collection device 300 may be configured in other quantities, and no specific limitation is made here.

[0056] In one feasible embodiment of the present invention, at least two inlet flue branch pipes 110 are provided, each inlet flue branch pipe 110 is connected in parallel to the inlet flue main pipe 100, and each inlet flue branch pipe 110 is connected in series to at least two particle collection devices 300; and / or, at least two outlet flue branch pipes 210 are provided, each outlet flue branch pipe 210 is connected in parallel to the outlet flue main pipe 200, and each outlet flue branch pipe 210 is connected in series to at least two particle collection devices 300.

[0057] The flue gas can be distributed to the corresponding particulate trap 300 through the inlet flue branch pipe 110, and the flue gas in the corresponding particulate trap 300 can be discharged through the outlet flue branch pipe 210. This reduces the complexity of the branch pipe layout and makes it easier to flexibly adjust the number and combination of particulate traps 300 according to actual working conditions, thereby enhancing the system's adaptability and operational stability, and providing better modularity and scalability.

[0058] In the linear array, each particle collection device 300 is first divided into groups, and the groups are connected in parallel. The particle collection devices 300 within each group are also connected in parallel.

[0059] In one feasible embodiment, four particulate collection devices 300 are arranged in a linear array, for example, two rows and two columns. There are two inlet flue branch pipes 110, and each inlet flue branch pipe 110 is connected in series with two particulate collection devices 300 in the same row. In addition, there are also two outlet flue branch pipes 210, and each outlet flue branch pipe 210 is connected in series with two particulate collection devices 300 in the same row.

[0060] In another feasible embodiment, when six particulate collection devices 300 are arranged in a linear array, such as two rows and three columns, two inlet flue branch pipes 110 are provided, and each inlet flue branch pipe 110 is connected in series with three particulate collection devices 300 in the same row. Furthermore, two outlet flue branch pipes 210 are also provided, and each outlet flue branch pipe 210 is connected in series with three particulate collection devices 300 in the same row.

[0061] Designers may adjust the specific number and usage of the inlet flue branch pipe 110 and the outlet flue branch pipe 210 according to their needs, without making specific restrictions here.

[0062] In another embodiment of the present invention, at least three particle collection devices 300 are provided, and the multiple particle collection devices 300 are arranged in a ring array.

[0063] By using a ring array arrangement, limited space can be fully utilized to achieve a compact equipment layout, which is especially suitable for installation environments in circular or confined spaces. This improves space utilization, balances the distribution of flue gas flow, reduces local resistance loss, and enhances the overall system's flow uniformity and particle capture efficiency.

[0064] Designers can adjust the specific number of particle collection devices 300 according to usage needs, and no specific limitation is made here. In one feasible embodiment, three particle collection devices 300 are provided, and the three particle collection devices 300 are arranged in a ring with intervals.

[0065] The multiple particle collection devices 300 can be arranged in a ring at equal intervals or at unequal intervals, without specific limitations. Furthermore, the multiple particle collection devices 300 can be arranged in a ring with circular or elliptical intervals, without specific limitations.

[0066] In another embodiment of the present invention, the inlet flue main pipe 100 is provided with a distribution port, which is connected to each inlet flue branch pipe 110; and / or, the outlet flue branch pipe 210 is provided with multiple pipes, and each particle collection device 300 is connected to each other through an outlet flue branch pipe 210 to form a ring, wherein one of the outlet flue branch pipes 210 is connected to the outlet flue main pipe 200.

[0067] By cooperating with the distribution port and the outlet flue branch pipe 210 arranged in a ring at intervals, the flue gas can be flexibly distributed and efficiently collected among the various particulate collection devices 300, which significantly optimizes the uniformity of flue gas flow and the overall processing capacity of the system.

[0068] In an embodiment of the present invention, the particle collection device 300 includes an inner cylinder 310, an outer cylinder 320, and a particle collection structure 330. The upper part of the inner cylinder 310 is connected to the inlet flue branch pipe 110, and the bottom of the inner cylinder 310 is connected to the ash conveying pipe 410. The side wall of the inner cylinder 310 is provided with a multi-layer hole group for allowing flue gas to pass through. The outer cylinder 320 is sleeved outside the inner cylinder 310, and the bottom of the outer cylinder 320 is connected to the outlet flue branch pipe 210. A flow channel is formed between the outer cylinder 320 and the inner cylinder 310, and the flow channel is connected to the multi-layer hole group. The particle collection structure 330 includes a plurality of inclined plates disposed in the inner cylinder 310. The inclined plates are inclined downward along the direction from the outer side of the inner cylinder 310 to the middle of the inner cylinder 310.

[0069] Specifically, the flue gas enters the inner cylinder 310 from the top and spreads outwards into the particle collection structure 330. The inclined plates can efficiently collect dust in the flue gas. Then, the flue gas enters the flow channel through the multi-layer hole group, flows downwards along the flow channel and is discharged from the outer cylinder 320.

[0070] Multiple inclined plates effectively guide the dust-laden flue gas to form a stable settling path within the inner cylinder 310, enhancing the separation of large dust particles. Furthermore, the flue gas undergoes multiple diversions and directional changes between the inner cylinder 310, the particle collection structure 330, and the outer cylinder 320, significantly improving the collision, interception, and gravity settling efficiency of particles. This achieves highly efficient, low-resistance particle collection, offering advantages such as strong processing capacity, stable operation, and easy maintenance. It is particularly suitable for purifying industrial flue gas in high-temperature, high-dust-concentration environments.

[0071] In an embodiment of the present invention, the bottom of the inner cylinder 310 is recessed inward and connected to the ash conveying pipe 410; the upper part of the outer cylinder 320 is recessed inward and connected to the outer wall of the inlet flue branch pipe 110; and the lower part of the outer cylinder 320 is recessed inward and connected to the outlet flue branch pipe 210.

[0072] By making the bottom of the inner cylinder 310 contract inward and connecting it to the ash conveying pipe 410, it is beneficial to concentrate and smoothly discharge particulate matter, improve ash discharge efficiency and reduce the risk of secondary dust generation.

[0073] Furthermore, by making the upper part of the outer cylinder 320 contract inward and connect it with the outer wall of the inlet flue branch pipe 110, the compactness and sealing of the structure are enhanced.

[0074] Furthermore, by making the lower part of the outer cylinder 320 contract inward and connect it with the outlet flue branch pipe 210, the flow path of the flue gas is further optimized, and the uniformity of the flow field and the collection efficiency of the outlet flue gas are improved.

[0075] In an embodiment of the present invention, the flow cross-sectional area of ​​the inlet flue branch pipe 110 is the same as the flow cross-sectional area of ​​the inner cylinder 310; and / or, the flow cross-sectional area of ​​the inlet flue branch pipe 110 is the same as the flow cross-sectional area of ​​the outlet flue branch pipe 210.

[0076] Preferably, the flow cross-sectional area of ​​the inlet flue branch pipe 110 is the same as that of the inner cylinder 310; and the flow cross-sectional area of ​​the inlet flue branch pipe 110 is the same as that of the outlet flue branch pipe 210.

[0077] By making the flow cross-sectional area of ​​the inlet flue branch pipe 110 the same as that of the inner cylinder 310, the flow velocity of the flue gas is kept stable when it enters the particle collection device 300, avoiding airflow disturbance caused by changes in cross-sectional area, thereby improving the particle collection efficiency.

[0078] Furthermore, by making the flow cross-sectional area of ​​the inlet flue branch pipe 110 the same as that of the outlet flue branch pipe 210, the flue gas maintains consistent flow characteristics when entering and exiting the particulate collection device 300, reducing flow resistance, maintaining the overall airflow balance of the system, further optimizing particulate separation performance and reducing energy consumption.

[0079] In an embodiment of the present invention, the total open area of ​​the multi-layer perforated group is not less than the flow cross-sectional area of ​​the inlet flue branch pipe 110. By ensuring that the total open area of ​​the multi-layer perforated group is not less than the flow cross-sectional area of ​​the inlet flue branch pipe 110, the flow capacity of flue gas entering the gap space through the holes in the inner cylinder 310 wall can be effectively guaranteed, avoiding the increase in flow velocity and flow resistance caused by the reduction of local flow area, thereby reducing system energy consumption and improving the separation efficiency and settling stability of particles in the gap space, further enhancing the overall performance of the particle collection device 300.

[0080] In an embodiment of the present invention, the flow cross-sectional area of ​​the inlet flue main 100 is the same as that of the outlet flue main 200; and / or, the total flow cross-sectional area of ​​each inlet flue branch 110 is not less than the flow cross-sectional area of ​​the inlet flue main 100.

[0081] Preferably, the cross-sectional area of ​​the inlet flue main 100 is the same as that of the outlet flue main 200; and the total cross-sectional area of ​​each inlet flue branch 110 is not less than the cross-sectional area of ​​the inlet flue main 100.

[0082] By ensuring that the cross-sectional area of ​​the inlet flue duct 100 is the same as that of the outlet flue duct 200, the consistency of flue gas flow capacity in the main flue section of the entire system is guaranteed, avoiding velocity changes and pressure fluctuations caused by differences in cross-sectional area, thereby maintaining the stability of system operation.

[0083] Furthermore, by ensuring that the total flow cross-sectional area of ​​each inlet flue branch pipe 110 is not less than the flow cross-sectional area of ​​the inlet flue main pipe 100, it effectively prevents the phenomenon of excessively high local flow velocity or flow obstruction when the flue gas is diverted into each branch pipe, reduces system resistance loss, ensures that the flue gas is evenly distributed to each particulate collection device 300, and further improves particulate collection efficiency and overall system performance.

[0084] In an embodiment of the present invention, the flow cross-sectional area of ​​the outer cylinder 320 is not less than twice the flow cross-sectional area of ​​the inner cylinder 310. By ensuring that the flow cross-sectional area of ​​the outer cylinder 320 is not less than twice the flow cross-sectional area of ​​the inner cylinder 310, the larger flow cross-sectional area reduces the resistance to flue gas flow, avoids the risk of local blockage and increased pressure drop, and thus ensures the stable operation of the system.

[0085] In an embodiment of the present invention, the particle collection system further includes a dust conveying structure 500, which is used to connect the ash hopper 430 and the converter 10.

[0086] By setting up a dust conveying structure 500, the collected particulate matter can be conveyed to the converter 10, realizing the reuse or harmless treatment of particulate matter. This not only reduces the risk of secondary dust pollution, but also improves the overall environmental performance and automation level of the system.

[0087] Designers can adjust the specific construction of the dust conveying structure 500 according to usage requirements, and no specific limitations are imposed here. In one feasible embodiment, the dust conveying structure 500 is a pneumatic conveying pipe. In another feasible embodiment, the dust conveying structure 500 is a scraper conveyor. Of course, in other feasible embodiments, the dust conveying structure 500 can also be configured as a briquetting machine, where the dust is briquetized before being conveyed.

[0088] In an embodiment of the present invention, the ash silo 430 may be equipped with a weighing structure, which can measure the weight of the ash silo 430 in real time. Furthermore, the cooled ash in the ash silo can be transported and reused through various methods such as briquetting machines, pneumatic conveying, and scraper conveyors.

[0089] The pre-flue of converter 10 is connected to the inlet flue main 100, and the inlet flue main 100 is connected to the inlet of each particle collection device 300 through several inlet flue branch pipes 110. The outlet of each particle collection device 300 is connected to the outlet flue branch pipe 210, and each outlet flue branch pipe 210 is connected to the outlet flue main 200.

[0090] The outlet flue main pipe 200 is connected to the downstream waste heat boiler 600 and other process equipment. The ash conveying pipes 410 of each particle collection device 300 are connected to the ash cooler. The outlet of the ash cooler is connected to the ash conveying structure 500 via the ash silo 430, and finally sent to the converter 10 for reuse or to the subsequent dry ash recycling process equipment.

[0091] In an embodiment of the present invention, the cooling device 420 is a cooling ash machine, the cooling medium inlet of the cooling ash machine is connected to the cooling water inlet pipe 421, and the cooling medium outlet of the cooling ash machine is connected to the cooling water outlet pipe 422.

[0092] By setting up a cold ash machine, the collected particulate matter can be cooled efficiently, effectively preventing high-temperature ash from causing equipment damage or safety hazards during subsequent transportation or storage.

[0093] Furthermore, by setting up cooling water inlet pipe 421 and cooling water outlet pipe 422, heat from the high-temperature ash material can be recovered, improving the thermal energy utilization rate, reducing system operating costs, and effectively ensuring the continuous and stable operation of the particle collection system.

[0094] Specifically, the ash cooler has a cooling medium channel and a dust channel inside, which are isolated from each other and only exchange heat. Furthermore, the ash cooler can be configured with a spiral structure to cool the high-temperature ash while it is being propelled.

[0095] In embodiments of the present invention, the particle capture system further includes a waste heat boiler 600, with an outlet flue main 200 and / or a cooling water outlet pipe 422 connected to the waste heat boiler 600. Preferably, both the outlet flue main 200 and the cooling water outlet pipe 422 are connected to the waste heat boiler 600.

[0096] The main flue pipe 200 and cooling water outlet pipe 422 can introduce the waste heat from the flue gas and the heat carried by the cooling medium into the waste heat boiler 600, realizing efficient recovery and utilization of heat energy, improving the energy efficiency of the entire system, reducing energy waste, lowering the energy consumption of subsequent flue gas treatment, and mitigating the thermal pollution of high-temperature flue gas on the environment, further enhancing the overall energy-saving and environmental protection performance of the particulate capture system. The water in the cooling water outlet pipe 422 is sent to the waste heat boiler 600 and can participate in the circulation as preheated boiler circulating water.

[0097] In an embodiment of the present invention, the particle collection system further includes a primary dust removal device 700, which is connected to the air outlet of the waste heat boiler 600.

[0098] By connecting the primary dust removal device 700 to the outlet of the waste heat boiler 600, the initial separation and removal of large particulate pollutants can be achieved before the flue gas enters the subsequent treatment stage, effectively reducing the load on subsequent dust removal equipment and improving the overall dust removal efficiency.

[0099] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0100] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A particle capture system, characterized in that, include: The inlet flue main is used to input the flue gas to be captured; The outlet flue main pipe is used to output the purified flue gas. At least two particulate collection devices are provided, each of which is connected in parallel. The inlet of each particulate collection device is connected to the main inlet flue via an inlet flue branch pipe, and the outlet of each particulate collection device is connected to the main outlet flue via an outlet flue branch pipe. The ash conveying assembly includes multiple ash conveying pipes corresponding to and connected to the ash discharge ports of each of the particle collection devices, as well as a cooling device and an ash hopper sequentially arranged on the ash conveying pipes.

2. The particle capture system as described in claim 1, characterized in that, Multiple of the particle collection devices are arranged in a linear array.

3. The particle capture system as described in claim 2, characterized in that, The inlet flue branch pipe is provided with at least two, each of the inlet flue branch pipes is connected in parallel to the inlet flue main pipe, and each of the inlet flue branch pipes is connected in series to at least two of the particle collection devices; and / or, the outlet flue branch pipe is provided with at least two, each of the outlet flue branch pipes is connected in parallel to the outlet flue main pipe, and each of the outlet flue branch pipes is connected in series to at least two of the particle collection devices.

4. The particle capture system as described in claim 1, characterized in that, The particle collection device is provided in at least three parts, and the multiple particle collection devices are arranged in a ring array.

5. The particle capture system as described in claim 4, characterized in that, The inlet flue main pipe is provided with a distribution port, which is connected to each of the inlet flue branch pipes; and / or, the outlet flue branch pipes are provided with multiple branches, and each of the particle collection devices is connected to each other through an outlet flue branch pipe to form a ring, wherein one of the outlet flue branch pipes is connected to the outlet flue main pipe.

6. The particle capture system as described in claim 1, characterized in that, The particle collection device includes: The inner cylinder has its upper part connected to the inlet flue branch pipe and its bottom part connected to the ash conveying pipe. The inner cylinder has a multi-layer hole group on its side wall for the passage of flue gas. An outer cylinder is sleeved outside the inner cylinder. The bottom of the outer cylinder is connected to the outlet flue branch pipe. A flow channel is formed between the outer cylinder and the inner cylinder, and the flow channel is connected to the multi-layer hole group. A particle trapping structure includes multiple inclined plates disposed in the inner cylinder, the inclined plates being inclined downwards along the outer side of the inner cylinder to the middle of the inner cylinder.

7. The particle capture system as described in claim 6, characterized in that, The bottom of the inner cylinder is recessed inward and connected to the ash conveying pipe; the upper part of the outer cylinder is recessed inward and connected to the outer wall of the inlet flue branch pipe; the lower part of the outer cylinder is recessed inward and connected to the outlet flue branch pipe.

8. The particle capture system as described in claim 6, characterized in that, The flow cross-sectional area of ​​the inlet flue branch pipe is the same as that of the inner cylinder; and / or, the flow cross-sectional area of ​​the inlet flue branch pipe is the same as that of the outlet flue branch pipe.

9. The particle capture system as described in claim 6, characterized in that, The total opening area of ​​the multi-layer perforated group is not less than the flow cross-sectional area of ​​the inlet flue branch pipe.

10. The particle capture system as described in claim 6, characterized in that, The cross-sectional area of ​​the inlet flue main is the same as that of the outlet flue main; and / or the total cross-sectional area of ​​each of the inlet flue branch pipes is not less than the cross-sectional area of ​​the inlet flue main.

11. The particle capture system as described in claim 6, characterized in that, The flow cross-sectional area of ​​the outer cylinder is not less than twice the flow cross-sectional area of ​​the inner cylinder.

12. The particle capture system as described in claim 1, characterized in that, The particle collection system also includes a dust conveying structure for connecting the ash silo with the converter.

13. The particle capture system as described in claim 1, characterized in that, The cooling device is a cooling ash machine, the cooling medium inlet of the cooling ash machine is connected to a cooling water inlet pipe, and the cooling medium outlet of the cooling ash machine is connected to a cooling water outlet pipe.

14. The particle capture system as described in claim 13, characterized in that, The particle capture system also includes a waste heat boiler, and the outlet flue main and / or the cooling water outlet pipe are connected to the waste heat boiler.

15. The particle capture system as described in claim 14, characterized in that, The particle collection system also includes a primary dust removal device, which is connected to the air outlet of the waste heat boiler.

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